US10450909B2 - Oil pump - Google Patents
Oil pump Download PDFInfo
- Publication number
- US10450909B2 US10450909B2 US13/984,246 US201213984246A US10450909B2 US 10450909 B2 US10450909 B2 US 10450909B2 US 201213984246 A US201213984246 A US 201213984246A US 10450909 B2 US10450909 B2 US 10450909B2
- Authority
- US
- United States
- Prior art keywords
- oil pump
- vanes
- vane wheel
- pump
- circumference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/181—Axial flow rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
- F01M2001/0238—Rotary pumps
Definitions
- the subject matter of the invention is an oil pump in a motor vehicle, having a housing, an electric motor arranged in the housing, and the electric motor drives a pump stage also arranged in the housing.
- Such oil pumps are known and are thus prior art.
- the known oil pumps are positive-displacement pumps with correspondingly high power and volume flow rate. It is also known for oil pumps to be used in transmissions to drive oil circulation in the transmission. In the case of transmissions, it is known that the gear wheels dip into the oil sump, which leads to splashing losses during operation. To reduce the splashing losses, the oil level in the oil sump is lowered during operation by virtue of the oil pump extracting the oil and conveying it to a higher level in the transmission, wherein a volume flow must be managed with a relatively small pressure increase. It is a problem here that the known positive-displacement pumps are overdimensioned for this task, and thus ineffective, owing to their high power consumption. Furthermore, at low temperatures at which the viscosity of the oil greatly increases, the efficiency of a positive-displacement pump decreases further.
- One embodiment of the invention is based on providing an oil pump in a motor vehicle, which oil pump delivers a certain volume flow with a relatively small pressure increase with good efficiency.
- the oil pump should furthermore be capable of delivering the oil effectively regardless of its present viscosity.
- One embodiment of the invention is an oil pump that is an axial-type rotatory pump.
- an axial rotatory pump as an oil pump permits the use of a pump with lower power consumption and thus a pump suited to the delivery task.
- the rotatory pump in the case of a configuration determined by an engineer, does not operate adequately in all operating situations. In particular, at low temperatures, friction losses increase greatly due to the high viscosity of the oil.
- a pump wheel with a reduced number of vanes is provided. The vanes are designed such that a free region is formed between two adjacent vanes on the circumference of the vane wheel hub, in which free region the fluid to be delivered can pass through freely. This embodiment results in a relatively low delivery rate, for which reason such a vane wheel configuration has not hitherto been implemented.
- the vane wheel should have at least two vanes and no more than four vanes.
- the length of the vanes in the direction of rotation is greater than or equal to their radial width.
- the radial width of the vanes is constant over their length.
- the vane wheel can be arranged in a delivery opening or a delivery duct, wherein the inner contour of the opening or of the duct is slightly larger than the vane wheel. Since, in this way, only a small gap forms between the inner contour and the vanes, the delivery rate is further improved.
- the ends of the vanes may be of various designs to improve the flow behavior. It has proven to be advantageous for those ends of the vanes which point in the direction of rotation to have a radius whose center is arranged in the vane in relation to the radial width of the vane.
- ends of the vanes that point opposite the direction of rotation may likewise be rounded. It is however also conceivable for said ends to be of rectilinear or arc-shaped design.
- the edge In the case of a rectilinear design, the edge may be arranged radially or at an angle which deviates from radial. In the case of an arc-shaped edge, the arc may be concave or convex.
- FIG. 1 is a perspective illustration of an oil pump according to the invention
- FIG. 2 is the vane wheel of the oil pump of FIG. 1 in a plan view
- FIG. 3 is the vane wheel of FIG. 1 in a side view.
- the oil pump 1 has a housing 2 in which an electric motor 3 is arranged.
- the housing 2 has a flange 4 by which the oil pump 1 is fastened to a transmission.
- the electric motor 3 drives a shaft 5 situated in the interior of the transmission.
- a vane wheel 6 is fastened to that end of the shaft 5 that faces away from the electric motor 3 .
- the vane wheel 6 is surrounded by a tubular outer ring 19 , the inner diameter of which is of such a size that a small gap is situated between the inner contour and the vanes 12 , 13 , which gap permits an unhindered rotation of the vane wheel 6 .
- the outer ring 19 may have an inlet nozzle 20 .
- the vane wheel 6 is situated in a bore 7 of a partition 8 of the transmission, wherein the partition 8 separates two chambers 9 , 10 of the transmission. During the operation of the oil pump 1 , the oil situated in the chamber 9 is drawn in and delivered into the chamber 10 .
- FIGS. 2 and 3 show the vane wheel 6 with its hub 11 .
- two vanes 12 , 13 are arranged spaced apart from one another such that free regions 14 , 15 are present between the two vanes 12 , 13 , in which free regions 14 , 15 the vanes 12 , 13 do not overlap.
- the oil can pass through the vane wheel such that the contact of the vanes 12 , 13 with the oil is minimized, which leads to a reduction in friction losses.
- the vanes 12 , 13 extend around the hub 11 at the circumference thereof over an angular range of in each case 110°, such that the free regions 14 , 15 cover an angular range of in each case 70° and account for a total of 39% of the hub circumference.
- the vanes 12 , 13 are rounded at their end 16 pointing in the direction of rotation, whereas the opposite end 17 has a rectilinear edge 18 which is inclined counter to the direction of rotation.
- the radial width b of the vanes 12 , 13 is constant over the length of the vanes 12 , 13 .
Abstract
Description
Claims (14)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011010671A DE102011010671A1 (en) | 2011-02-08 | 2011-02-08 | oil pump |
DE102011010671.5 | 2011-02-08 | ||
DE102011010671 | 2011-02-08 | ||
PCT/EP2012/051977 WO2012107410A2 (en) | 2011-02-08 | 2012-02-06 | Oil pump |
Publications (2)
Publication Number | Publication Date |
---|---|
US20130315756A1 US20130315756A1 (en) | 2013-11-28 |
US10450909B2 true US10450909B2 (en) | 2019-10-22 |
Family
ID=45592369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/984,246 Active 2034-04-17 US10450909B2 (en) | 2011-02-08 | 2012-02-06 | Oil pump |
Country Status (5)
Country | Link |
---|---|
US (1) | US10450909B2 (en) |
EP (1) | EP2673512A2 (en) |
CN (1) | CN103380302B (en) |
DE (1) | DE102011010671A1 (en) |
WO (1) | WO2012107410A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3238661B1 (en) | 2008-10-10 | 2019-05-22 | Boston Scientific Scimed, Inc. | Medical devices and delivery systems for delivering medical devices |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1596459A (en) * | 1924-06-09 | 1926-08-17 | Westinghouse Electric & Mfg Co | Propeller pump |
US1688809A (en) | 1925-12-24 | 1928-10-23 | Gill James Herbert Wainwright | Axial-flow hydraulic machine |
US1807397A (en) * | 1927-05-20 | 1931-05-26 | Westinghouse Electric & Mfg Co | Propeller type pump or fan |
US3023709A (en) * | 1958-05-26 | 1962-03-06 | Kondo Masukichi | Vanes of an impeller for axial flow propeller pumps |
US3073247A (en) * | 1960-11-08 | 1963-01-15 | Allis Chalmers Mfg Co | Transformer oil circulating pump |
CN1085993A (en) | 1993-09-23 | 1994-04-27 | 季海林 | Axial-flow type high-speed paddle pump |
DE19619692A1 (en) | 1995-05-23 | 1996-11-28 | Unisia Jecs Corp | Volute pump for IC engine of vehicle |
US5681146A (en) * | 1996-10-04 | 1997-10-28 | Future Sea Farms Inc. | Low head pumping system for fish farms |
US20030228214A1 (en) * | 2001-10-26 | 2003-12-11 | Mcbride Mark W. | Mixed flow pump |
CN2600621Y (en) | 2003-01-14 | 2004-01-21 | 长春诺森电机有限公司 | Oil pump for axial transformer |
DE10312978A1 (en) | 2003-03-24 | 2004-10-07 | Robert Bosch Gmbh | Electro-hydrodynamic unit e.g. fluid pump or heating pump, has radial struts formed as vanes or blades for forming the fluid pressure generator |
US6991574B2 (en) * | 2004-01-08 | 2006-01-31 | Arvinmeritor Technology, Llc | Dual level oil impeller for drive axle assembly |
US20070048139A1 (en) | 2005-08-23 | 2007-03-01 | De Oliveira Joao B | Cylindrical rotor with internal blades |
CN201057169Y (en) | 2007-06-18 | 2008-05-07 | 株洲市荣达铁路机电有限公司 | Fuel pump impeller for power car transformer device |
CN201078352Y (en) | 2007-06-29 | 2008-06-25 | 株洲市荣达铁路机电有限公司 | Oil pump housing for electric locomotive voltage transformer |
CN201090458Y (en) | 2007-09-25 | 2008-07-23 | 杰克陈 | Brushless fluid pump with built-in control circuit |
US20090314698A1 (en) * | 2008-06-20 | 2009-12-24 | Higbee Robert W | Combined Axial-Radial Intake Impeller With Circular Rake |
-
2011
- 2011-02-08 DE DE102011010671A patent/DE102011010671A1/en not_active Ceased
-
2012
- 2012-02-06 US US13/984,246 patent/US10450909B2/en active Active
- 2012-02-06 CN CN201280007873.4A patent/CN103380302B/en active Active
- 2012-02-06 WO PCT/EP2012/051977 patent/WO2012107410A2/en active Application Filing
- 2012-02-06 EP EP12703770.3A patent/EP2673512A2/en not_active Withdrawn
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1596459A (en) * | 1924-06-09 | 1926-08-17 | Westinghouse Electric & Mfg Co | Propeller pump |
US1688809A (en) | 1925-12-24 | 1928-10-23 | Gill James Herbert Wainwright | Axial-flow hydraulic machine |
US1807397A (en) * | 1927-05-20 | 1931-05-26 | Westinghouse Electric & Mfg Co | Propeller type pump or fan |
US3023709A (en) * | 1958-05-26 | 1962-03-06 | Kondo Masukichi | Vanes of an impeller for axial flow propeller pumps |
US3073247A (en) * | 1960-11-08 | 1963-01-15 | Allis Chalmers Mfg Co | Transformer oil circulating pump |
CN1085993A (en) | 1993-09-23 | 1994-04-27 | 季海林 | Axial-flow type high-speed paddle pump |
US5779444A (en) | 1995-05-23 | 1998-07-14 | Unisia Jecs Corporation | Centrifugal pump |
DE19619692A1 (en) | 1995-05-23 | 1996-11-28 | Unisia Jecs Corp | Volute pump for IC engine of vehicle |
US5681146A (en) * | 1996-10-04 | 1997-10-28 | Future Sea Farms Inc. | Low head pumping system for fish farms |
US20030228214A1 (en) * | 2001-10-26 | 2003-12-11 | Mcbride Mark W. | Mixed flow pump |
CN2600621Y (en) | 2003-01-14 | 2004-01-21 | 长春诺森电机有限公司 | Oil pump for axial transformer |
DE10312978A1 (en) | 2003-03-24 | 2004-10-07 | Robert Bosch Gmbh | Electro-hydrodynamic unit e.g. fluid pump or heating pump, has radial struts formed as vanes or blades for forming the fluid pressure generator |
US6991574B2 (en) * | 2004-01-08 | 2006-01-31 | Arvinmeritor Technology, Llc | Dual level oil impeller for drive axle assembly |
US20070048139A1 (en) | 2005-08-23 | 2007-03-01 | De Oliveira Joao B | Cylindrical rotor with internal blades |
CN201057169Y (en) | 2007-06-18 | 2008-05-07 | 株洲市荣达铁路机电有限公司 | Fuel pump impeller for power car transformer device |
CN201078352Y (en) | 2007-06-29 | 2008-06-25 | 株洲市荣达铁路机电有限公司 | Oil pump housing for electric locomotive voltage transformer |
CN201090458Y (en) | 2007-09-25 | 2008-07-23 | 杰克陈 | Brushless fluid pump with built-in control circuit |
US20090314698A1 (en) * | 2008-06-20 | 2009-12-24 | Higbee Robert W | Combined Axial-Radial Intake Impeller With Circular Rake |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3238661B1 (en) | 2008-10-10 | 2019-05-22 | Boston Scientific Scimed, Inc. | Medical devices and delivery systems for delivering medical devices |
Also Published As
Publication number | Publication date |
---|---|
CN103380302A (en) | 2013-10-30 |
CN103380302B (en) | 2017-05-03 |
WO2012107410A3 (en) | 2012-11-15 |
DE102011010671A1 (en) | 2012-08-09 |
US20130315756A1 (en) | 2013-11-28 |
WO2012107410A2 (en) | 2012-08-16 |
EP2673512A2 (en) | 2013-12-18 |
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AS | Assignment |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KOEPPLER, PETER;REEL/FRAME:030964/0179 Effective date: 20130612 |
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Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT RECEIVED |
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STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
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AS | Assignment |
Owner name: VITESCO TECHNOLOGIES GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONTINENTAL AUTOMOTIVE GMBH;REEL/FRAME:053371/0846 Effective date: 20200601 |
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